engleski

Production and supply of solid fuels and intermediates (Energy properties of Switchgrass (Panicum Virgatum L.) depending on different ash apllication rate)

Fossil fuels currently meet most of the energy needs in the world. However, according to the goals of modern society to become low-carbon and environmentally-friendly "green economy" defines renewable energy sources as an important segment for achieving the stated goals. Under the classification of renewable energy sources, agricultural biomass is also included, and thus the biomass obtained from the cultivation of perennial energy crops of agricultural origin. Switchgrass (Panicum virgatum L.), as an energy crop, is defined by low investment in agricultural technology, high resistance to disease and pests, as well as potentially high yields. Switchgrass biomass can be converted into different forms of energy or biofuels, and one of the ways of conversion is energy production through thermochemical conversion processes. The aim of this study was to determine the energetic properties (calorific values, proximate and ultimate analysis) of switchgrass biomass in relation to four different wood ash application rate (control ; 1, 5 t ash/ha ; 3 t ash/ha ; 4, 5 t ash/ha). The experimental field has been established at the end of April 2016, by split-plot design in three repetitions. Biomass harvest of switchgrass (Panicum virgatum L) will be conducted at spring season 2021, when the expected moisture content will be suitable for direct combustion process. Analyses of harvested biomass will be conducted at University of Zagreb Faculty of Agriculture in Laboratory for biomass and energy efficiency in agriculture.

energy crop, biomass, ash application, energy properties

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